Observable Notebooks - The portfolio and technical blog of Chris Henrick – provider of professional web development, data visualization, GIS, mapping, & cartography services.

GeoGebra CAS Calculator - Free online algebra calculator from GeoGebra: solve equations, expand and factor expressions, find derivatives and integrals

Jupyter - Project Jupyter exists to develop open-source software, open-standards, and services for interactive computing across dozens of programming languages. Ready to get started? Try it in your browser Install the Notebook.

GnuPlot - Gnuplot is a portable command-line driven interactive data and function plotting utility.

BeakerX - Open Source Polyglot Data Science Tool

GeoGebra - GeoGebra is free and multi-platform dynamic mathematics software for learning and teaching.